Condensed Consolidated Statements of Operations (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues
Net earned premiums	$ 136	$ 162	$ 281	$ 326
Net investment income	99	101	200	223
Net realized investment gains (losses):
Other-than-temporary impairment losses	(4)	(2)	(15)	(3)
Less: portion of other-than-temporary impairment loss recognized in other comprehensive income	(1)	5	(4)	13
Net impairment loss	(3)	(7)	(11)	(16)
Other net realized investment gains (losses)	1	22	4	63
Net realized investment gains (losses)	(2)	15	(7)	47
Net change in fair value of credit derivatives:
Realized gains (losses) and other settlements	1	5	3	20
Net unrealized gains (losses)	47	(11)	79	28
Net change in fair value of credit derivatives	48	(6)	82	48
Fair value gains (losses) on financial guaranty variable interest entities	2	12	6	22
Bargain purchase gain and settlement of pre-existing relationships	0	0	0	58
Commutation gains (losses)	(18)	0	(17)	73
Other income (loss)	(44)	24	(31)	38
Total revenues	221	308	514	835
Expenses
Loss and loss adjustment expenses	44	72	26	131
Amortization of deferred acquisition costs	4	4	9	8
Interest expense	24	25	48	49
Other operating expenses	62	57	127	125
Total expenses	134	158	210	313
Income (loss) before income taxes	87	150	304	522
Provision (benefit) for income taxes
Current	6	(5)	(31)	46
Deferred	6	2	63	6
Total provision (benefit) for income taxes	12	(3)	32	52
Net income (loss)	$ 75	$ 153	$ 272	$ 470
Earnings per share:
Basic (in dollars per share)	$ 0.67	$ 1.26	$ 2.39	$ 3.81
Diluted (in dollars per share)	0.67	1.24	2.37	3.76
Dividends (in dollars per share)	$ 0.16	$ 0.1425	$ 0.32	$ 0.285